CN107193638A - A kind of quick self-adapted moving method of network function perceived based on multi-dimensional environment - Google Patents
A kind of quick self-adapted moving method of network function perceived based on multi-dimensional environment Download PDFInfo
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- CN107193638A CN107193638A CN201710394950.0A CN201710394950A CN107193638A CN 107193638 A CN107193638 A CN 107193638A CN 201710394950 A CN201710394950 A CN 201710394950A CN 107193638 A CN107193638 A CN 107193638A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
- G06F2009/4557—Distribution of virtual machine instances; Migration and load balancing
Abstract
The invention discloses a kind of quick self-adapted moving method of network function perceived based on multi-dimensional environment, the matching process of triggering comprising migration, the system of selection of virtual functions to be migrated and move target virtual machine.The business demand dynamic change of user in network service procedure, virtual network function also correspondingly changes, when virtual machine node resource utilization exceedes threshold value, trigger transition condition, respective virtual machine VM nodes enter overload virtual machine sequence, pass through virtual functions system of selection to be migrated, select virtual functions to be moved out on overload virtual machine, move target virtual machine matching process selects corresponding purpose virtual machine according to virtual network function to be migrated, the migration of virtual functions is carried out, so as to realize the load balancing of network.
Description
Technical field
The invention belongs to software defined network (SDN) and network virtualization (NFV) field, it is related to a kind of customer service demand
Under the scene of dynamic change, the method for the network function fast transferring based on environment sensing.
Background technology
With the development of network, traditional network architecture is faced with problems, and such as agreement is too fat to move, service deployment is difficult
And scheduling of resource is dumb etc., hence it is imperative that proposing new technology to change this situation.NFV(Network
Function Virtualization, network function virtualization) and SDN (Software Defined Networking, software
Define network) arise at the historic moment.NFV technologies can operate in virtual network function on common hardware, and SDN can control flow
Forward-path, realizes Network Programmable.
At present, in network existing combination NFV and SDN technologies case, Internet resources are carried out by NFV technologies static
Mapping, is easily caused the unbalanced of network traffics distribution, and then cause load imbalance.The reconfigurable network disposed in SDN and NFV
In, target flow is forwarded to corresponding network function unit and handled by programmable switch, therefore the dynamic of network function
Deployment may cause the load imbalance between network control domain.In addition, when user terminal is moved, network function needs basis
Business demand is moved, and realizes the network that net is moved with people.
The content of the invention
Technical problem：There is provided a kind of customer service for the load imbalance problem that the present invention occurs in being disposed for NFV and SDN
Under the scene of demand dynamic change, the method for the network function fast transferring based on environment sensing.
Technical scheme：Under scene of the invention based on customer service demand dynamic change, the network work(based on environment sensing
The method of energy fast transferring, this method comprises the following steps：
The triggering of migration：
1-1) triggering of migration realizes that the module is located at by the resources of virtual machine state monitoring module on physical machine node
On physical machine node, monitoring is deployed in every resource behaviour in service of the virtual machine node on this physical machine node, including calculates
Resource, storage resource and communication resource etc..
1-2) the trigger condition of migration：The trigger condition of migration is migrated by the default resource of administrative staff using threshold value
Triggering, can the resource different to different resource type definitions use threshold value, when the use feelings of any resource in virtual machine
Condition exceedes default threshold value, and virtual machine overload triggers transition condition, and the virtual machine enters overload virtual machine sequence；
The system of selection of virtual functions to be migrated：
2-1) system of selection of virtual functions to be migrated is realized by the virtual functions selecting module to be migrated of controller.When
When transition condition is triggered, the resources of virtual machine state monitoring module of physical machine is by the related resource behaviour in service for overloading virtual machine
SDN controllers are reported, the use of overload virtual machine sequence and associated virtual machine resource is read in virtual functions system of selection to be migrated
Situation；
2-2) virtual functions selecting module to be migrated overloads resource type and the virtual work(disposed thereon according to virtual machine
Virtual functions to be migrated can be selected to the occupancy situation of each resource；
The matching process of move target virtual machine：
3-1) matching process of move target virtual machine is realized by the move target virtual machine selecting module of controller.Should
Module reads in virtual functions to be migrated, and under controller control domain in all physical machines virtual machine resource behaviour in service；
3-2) move target virtual machine selecting module is by demand of the virtual functions to be migrated to every resource, and each
The surplus resources situation of virtual machine, matches purpose virtual machine.
The triggering step 1-1 of migration) in, comprising resources of virtual machine state monitoring module, idiographic flow is as follows：
A) occupancy situation for the every resources of all VNF disposed on VNFs monitoring module monitors virtual machine VM nodes；
B) all virtual machine VM of VM resource status monitoring module monitors physical machine node deployment occupation condition；
C) when certain virtual machine VM any resource occupation exceedes predetermined threshold value, virtual machine overload triggers transition condition,
VNFs monitoring modulars and VM resource status monitoring modular are to controller report related data, while the virtual machine is added into overload
Virtual machine sequence；
Step 2-1 described in the system of selection of virtual functions to be migrated) in, include virtual functions selecting module to be migrated, tool
Body flow is as follows：
A) after transition condition is triggered, controller gets the VNF information in overload virtual machine sequence and associated virtual machine；
B) virtual functions selecting module to be migrated is according to the overload resource type for overloading virtual machine, and VNF money thereon
Source occupancy situation, defines Migration Index, ensures the VNF higher to overload resource occupation Migration Index using dynamic resource weight
It is bigger；
C) the VNF set on overload virtual machine is ranked up according to Migration Index, selects virtual functions to be migrated；
Step 3-1 described in the matching process of move target virtual machine) in, include move target virtual machine selecting module, tool
Body flow is as follows：
A) move target virtual machine selecting module obtains virtual void to be migrated at virtual functions selecting module to be migrated
Intend functional sequence；
B) the virtual selecting module of move target obtains all virtual machine collection under the set of overload virtual machine, controller from controller
Virtual machine set in conjunction and this physical machine；
C) move target virtual machine selecting module preferentially exists according to conditions of demand of the virtual functions to be migrated to every resource
Not overloading in this physical machine is matched in virtual machine set, the requirement of matching：
I. every resource occupation demand of virtual functions is met；
Ii. virtual functions are migrated to hereafter, and any resource occupation of this virtual machine is not over predetermined threshold value；
After conditions above is met, the match is successful, exports move target virtual machine；Otherwise continue not overloading virtually at other
Matched in machine set, matching requires identical；
D) after virtual functions are moved out, check whether the resource occupation of overload virtual machine is down to below threshold value, when resource is accounted for
During with being down to below threshold value, the virtual machine is removed from overload virtual machine sequence, added to not overloading virtual machine sequence；Otherwise
Continue transition process, until finally realizing the load balancing of network.
Initialism explanation：
NFV Network Function Virtualization network functions are virtualized
SDN Software Defined Networking software defined networks
VM Virtual Machine virtual machines
VNF Virtualized Network Function virtual network functions
Beneficial effect
The present invention is solved in SDN and NFV deployment, and Internet resources are carried out into static mappings by NFV technologies, are easily caused
Network traffics distribution it is unbalanced, and then the problem of cause load imbalance there is provided a kind of based on the virtual of resource behaviour in service
Function dynamic migration method, by perceiving resources of virtual machine service condition, when a certain resource use please be crossed more than predetermined threshold value, is touched
Transition condition is sent out, into transition state, virtual machine state is reported to the migration virtual functions selecting module of controller, obtains waiting to move
Virtual functions are moved, purpose virtual machine is matched by the move target virtual machine selecting module of controller, virtual functions migration is carried out,
The resource utilization of reduction overload virtual machine, realizes Network Load Balance.
Brief description of the drawings
Fig. 1 be SDN in, based on multi-dimensional environment perceive the quick self-adapted moving method of network function migration flow
Figure.
Fig. 2 is scene graph.
Fig. 3 is VNF dynamic migration procedure charts
Embodiment
Technical solution of the present invention is described in detail with Figure of description with reference to embodiments.
1. the scene of the present invention is as shown in Figure 2；Under the scene, controller is according to the service request of user, and physics
The service condition of machine and resources of virtual machine, the instantiation that VNF virtual network functions are carried out on certain position is placed.Work as user
After demand changes, corresponding change also occurs for corresponding VNF.The resources occupation rate of virtual machine exceedes default where VNF
Threshold value when, trigger transition condition.Virtual machine monitoring modular will overload virtual machine deposit overload virtual machine sequence, and report control
Device.Controller selects VNF to be migrated and matched to move according to the VNF for overloading the occupation condition of virtual machine and disposing thereon
Purpose virtual machine is moved, the resource utilization of reduction overload virtual machine realizes the dynamic equalization of network.
Explanation：
1) SDN controllers：Control the Topology connection of whole network, data forwarding flow table, monitor VNF migrations triggering and
VNF migration planning and migration.
2) physical machine node：Under the control domain of some SDN controller, it is made up of common hardware, includes calculating, storage
And the communication resource；
3) virtual machine VM nodes：The calculating with complete hardware system function simulated by software on physical machine node
Machine system, comprising calculating, storing and the communication resource, can dispose multiple virtual machine nodes on same physical machine node.
4) virtual network function VNF nodes：Virtual network function node is the business demand according to user suitable empty
Corresponding software is disposed on plan machine to realize corresponding function.
5) virtual functions selecting module to be migrated：Enter sequence to be migrated from selection virtual functions on overload virtual machine
6) move target virtual machine selecting module：Select the purpose virtual machine of virtual functions migration to be migrated；
7) resources of virtual machine state monitoring module：Resource to monitor the virtual machine VM nodes in physical machine uses shape
Condition；
8) VNFs monitoring modulars：Use feelings of the virtual network function disposed in monitoring virtual machine node to every resource
Condition；
2. it is as shown in figure 1, as follows based on the quick self-adapted transition processes of VNF that multi-dimensional environment is perceived：
1) under primary condition, SDN controllers carry out VNF example according to the business demand of user on virtual machine VM nodes
Change and place；
2) resources of virtual machine state monitoring module：Each physical machine calculated the virtual machine disposed in this physical machine,
Storage and the real-time monitoring of the communication resource, when the occupancy of a certain resource of virtual machine exceedes default threshold value, triggering VNF's moves
Shifting condition, system enters state to be migrated, while the virtual machine is added into overload virtual machine sequence；
3) virtual functions selecting module to be migrated：Monitor whether migration triggers, after VM triggers transition condition, read in overload
Virtual machine sequence, and the data in associated virtual machine in VNFs monitoring modulars, comprising all VNF on the virtual machine to calculate,
Storage and the occupancy situation of the communication resource；According to the overload resource type definitions changeable weight of virtual machine, VNF migration is calculated
Coefficient, the definition of transport coefficient takes the sum of products of ratio for the changeable weight of every kind of resource with VNF to resources of virtual machine；According to
After Migration Index is ranked up, VNF to be migrated is exported；
4) move target virtual machine selecting module：After virtual functions selecting module to be migrated exports VNF to be migrated, enter
Move target virtual machine selecting module, the effect of the module is the VNF to be migrated according to input, is that it matches appropriate migration mesh
Virtual machine；Virtual machine, such energy are not overloaded in the limited local physical machine of matching on the premise of customer service demand is met
The expense of enough maximized reduction migrations；When not overloading virtual machine set and can not meet VNF migration need in local physical machine
Ask, then match and do not overload virtual machine set in other physical machines；Note needing to prevent VNF from migrating to the VM during matching
Cause the resource utilization of the VM nodes to reach threshold value after node, transition condition is triggered again, cause to migrate again；So can pole
Big consumption of network resources, the reduction for causing user service to be experienced.
As mentioned previously, while network structure and network complexity is not increased, realize and realized using SDN controllers
The virtual functions fast transferring perceived based on multi-dimensional environment.As shown in figure 3, in system there are two sequences in virtual machine：Do not overload
Virtual machine sequence and overload virtual machine sequence；Both mutually disjoint, and both unions constitute whole virtual machines.It is empty under initial situation
Plan machine, which is located at, does not overload sequence, and VNF is deployed on VM nodes according to business demand.After VM resources occupation rate exceedes threshold value,
Never removed in overload sequence, be added to VM overload sequences.Now, VNF selecting modules to be migrated receive vm health data and
VNF status datas, select virtual network function VNF to be migrated.The VNF to be migrated that move target VM selecting modules pass through input
The related resource amount of occupancy, does not overload during VM gathers preferential on the premise of meeting customer service demand in local physical machine
Row matching；Matched after it fails to match in local physical machine, then in not overloading during VM gathers for other physical machines.
When VM overloads, whole VNF transition processes are as follows:
(1) monitor：Resources of virtual machine condition monitoring module in physical machine monitors disposed in the physical machine virtual in real time
The utilization rate of machine items resource, when the occupancy of a certain resource of virtual machine exceedes predetermined threshold value, triggers VNF migration bar
Part, system enters state to be migrated, and overload virtual machine is added into overload virtual machine sequence；
(2) sort：Virtual functions selecting module to be migrated is defined different according to the overload resource type of overload virtual machine
Resource weight, calculates the Migration Index of all VNF on overload virtual machine, the definition of Migration Index is dynamic resource weight and VM
Middle VNF selects virtual network function to be migrated to the sum of products of the occupancy ratio of the resource.
(3) match：Move target virtual machine selecting module is accounted for according to virtual network function to be migrated to every resource
With being matched in virtual machine is not overloaded, find and meet the purpose virtual machine of transition condition.In matching process, preferentially at this
Not overloading for ground physical machine is matched in virtual machine set, and the match is successful then terminates matching；Otherwise in other physical machines not
Matched in overload virtual machine set.
(4) migrate：When matching suitable purpose virtual machine, controller sends to virtual machine to be migrated and instructed, and carries out empty
Intend the migration of network function, to reduce the load of overload virtual machine, realize Network Load Balance.
Beneficial effects of the present invention are as follows：
When business demand is continually changing, the VNF of deployment takes excessive resources of virtual machine, causes virtual machine to overload, and is protecting
On the premise of demonstrate,proving business demand, controller can be carried out VNF and quickly dynamically moved according to the loading condition of the virtual machine of each in network
Move, and then realize the dynamic load leveling of network.Solve in SDN and NFV deployment, carried out Internet resources by NFV technologies
Static mappings, are easily caused the unbalanced of network traffics distribution, and then the problem of cause load imbalance.
Claims (4)
1. a kind of quick self-adapted moving method of network function perceived based on multi-dimensional environment, it is characterised in that this method is included
The matching process of the triggering of migration, the system of selection of virtual functions to be migrated and move target virtual machine, it is specific as follows：
1) triggering of migration：
1-1) triggering of migration realizes that the module is located at physics by the resources of virtual machine state monitoring module on physical machine node
On machine node, monitoring is deployed in every resource behaviour in service of virtual machine node on this physical machine node, including computing resource,
Storage resource and the communication resource；
1-2) the trigger condition of migration：The trigger condition of migration uses touching that threshold value is migrated by the default resource of administrative staff
Hair, the resources different to different resource type definitions use threshold value, when the service condition of any resource in virtual machine exceedes in advance
If threshold value, the virtual machine overload, trigger transition condition, the virtual machine enter overload virtual machine sequence；
2) system of selection of virtual functions to be migrated：
2-1) system of selection of virtual functions to be migrated is realized by the virtual functions selecting module to be migrated of controller；Work as migration
When condition is triggered, the resources of virtual machine state monitoring module of physical machine reports the related resource behaviour in service for overloading virtual machine
The use shape of overload virtual machine sequence and associated virtual machine resource is read in SDN controllers, virtual functions system of selection to be migrated
Condition；
2-2) virtual functions selecting module to be migrated overloads resource type and the virtual functions pair disposed thereon according to virtual machine
The occupancy situation of each resource, selects virtual functions to be migrated；
3) matching process of move target virtual machine：
3-1) matching process of move target virtual machine is realized by the move target virtual machine selecting module of controller, the module
Read in virtual functions to be migrated, and under controller control domain in all physical machines virtual machine resource behaviour in service；
3-2) move target virtual machine selecting module is by demand of the virtual functions to be migrated to every resource, and each is virtual
The surplus resources situation of machine, matches purpose virtual machine.
2. in the method as described in claim 1, it is characterised in that the triggering step 1-1 of the 1) migration) in, comprising
Resources of virtual machine state monitoring module, idiographic flow is as follows：
A) occupancy situation for the every resources of all VNF disposed on VNFs monitoring module monitors virtual machine VM nodes；
B) all virtual machine VM of VM resource status monitoring module monitors physical machine node deployment occupation condition；
C) when certain virtual machine VM any resource occupation exceedes predetermined threshold value, virtual machine overload triggers transition condition, VNFs
Monitoring modular and VM resource status monitoring modular are to controller report related data, while it is virtual that the virtual machine is added into overload
Machine sequence.
3. in the method as described in claim 1, it is characterised in that walked described in the system of selection of the virtual functions 2) to be migrated
Rapid 2-1) in, comprising virtual functions selecting module to be migrated, idiographic flow is as follows：
A) after transition condition is triggered, controller gets the VNF information in overload virtual machine sequence and associated virtual machine；
B) virtual functions selecting module to be migrated is according to the overload resource type for overloading virtual machine, and VNF resource is accounted for thereon
With situation, Migration Index is defined, ensures the VNF higher to overload resource occupation Migration Index using dynamic resource weight more
Greatly；
C) the VNF set on overload virtual machine is ranked up according to Migration Index, selects virtual functions to be migrated.
4. in the method as described in claim 1, it is characterised in that walked described in the matching process of 3) the move target virtual machine
Rapid 3-1) in, comprising move target virtual machine selecting module, idiographic flow is as follows：
A) move target virtual machine selecting module obtains virtual work(to be migrated at virtual functions selecting module to be migrated
Can sequence；
B) the virtual selecting module of move target from controller obtain under overload virtual machine set, controller all virtual machine set with
And the virtual machine set in this physical machine；
C) move target virtual machine selecting module is according to conditions of demand of the virtual functions to be migrated to every resource, preferentially in this thing
Not overloading on reason machine is matched in virtual machine set, the requirement of matching：
I. every resource occupation demand of virtual functions is met；
Ii. virtual functions are migrated to hereafter, and any resource occupation of this virtual machine is not over predetermined threshold value；
After conditions above is met, the match is successful, exports move target virtual machine；Otherwise continue not overloading virtual machine collection at other
Matched in conjunction, matching requires identical；
D) after virtual functions are moved out, check whether the resource occupation of overload virtual machine is down to below threshold value, when resource occupation drop
When below to threshold value, the virtual machine is removed from overload virtual machine sequence, added to not overloading virtual machine sequence；Otherwise continue
Transition process, until finally realizing the load balancing of network.
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| WO2020207148A1 (en) * | 2019-04-09 | 2020-10-15 | 中兴通讯股份有限公司 | Load balancing method and apparatus |
| CN112860384A (en) * | 2021-03-15 | 2021-05-28 | 南京邮电大学 | VNF multiplexing and migrating method oriented to multi-dimensional resource load balancing |
| CN115718571A (en) * | 2022-11-23 | 2023-02-28 | 深圳计算科学研究院 | Data management method and device based on multi-dimensional features |
| CN115718571B (en) * | 2022-11-23 | 2023-08-22 | 深圳计算科学研究院 | Data management method and device based on multidimensional features |
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